12208211 has 4 divisors (see below), whose sum is σ = 12283272. Its totient is φ = 12133152.

The previous prime is 12208177. The next prime is 12208213. The reversal of 12208211 is 11280221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12208211 - 2¹⁰ = 12207187 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 12208211.

It is not an unprimeable number, because it can be changed into a prime (12208213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37286 + ... + 37611.

It is an arithmetic number, because the mean of its divisors is an integer number (3070818).

Almost surely, 2^12208211 is an apocalyptic number.

12208211 is a deficient number, since it is larger than the sum of its proper divisors (75061).

12208211 is an equidigital number, since it uses as much as digits as its factorization.

12208211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75060.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 12208211 is about 3494.0250428410. The cubic root of 12208211 is about 230.2593860025.

Adding to 12208211 its reverse (11280221), we get a palindrome (23488432).

The spelling of 12208211 in words is "twelve million, two hundred eight thousand, two hundred eleven".